Upper Exhaust Bellows 2-Pack for Mercury MerCruiser V6/V8 4-Inch Center-Mounted Riser – Replaces 32-44348T

Product Details

This Upper Exhaust Bellows 2-Pack is intended for compatible Mercury MerCruiser stern-drive exhaust systems using a 4-inch center-mounted riser and 4-inch exhaust elbow. The two flexible rubber bellows connect the upper exhaust outlet to the elbow and help maintain a secure exhaust passage when correctly matched to the original application.

The company product record identifies this item as a combination of two upper exhaust bellows. It is supplied as two bellows rather than as a complete exhaust-system hardware kit. The primary listed replacement reference is MerCruiser 32-44348T, described as a 4-inch upper tube.

• Two upper exhaust bellows for a compatible application.
• 4-inch upper exhaust connection.
• Designed for a center-mounted riser-to-exhaust-elbow arrangement.
• Aftermarket replacement component; not an OEM-branded part.

Reference Numbers

Use the reference numbers below only after comparing the original bellows, connection size, riser position, and exhaust-elbow arrangement. A number match alone does not confirm every engine or sterndrive configuration.

Application and Compatibility

Catalog information associates the 4-inch upper bellows application with compatible Mercury MerCruiser V6 and V8 stern-drive exhaust systems using a center-mounted riser. The available records do not establish one universal year, horsepower, engine-model, Alpha/Bravo, or serial-number range for every configuration.

Before ordering, compare the original part with the product image and confirm all of the following:

• The original component is the upper exhaust bellows, not the lower exhaust bellows.
• The connection is approximately 4 inches and uses a center-mounted riser-to-elbow layout.
• The original reference is 32-44348T or another verified cross-reference listed above.
• The riser, elbow, clamp arrangement, and bellows profile match the replacement.

This product should not be treated as a universal fit for every Mercury MerCruiser V6 or V8 engine. Model, year, sterndrive generation, and serial-number conditions must remain consistent with the specific exhaust arrangement on the boat.

Technical Specifications

Product Type

Upper exhaust bellows, two-piece pack

Application Position

Upper exhaust connection

Connection Arrangement

4-inch center-mounted riser to 4-inch exhaust elbow

Quantity

Two upper exhaust bellows

Material

Flexible marine exhaust-bellows rubber; exact compound not specified

Primary Replacement Reference

Mercury MerCruiser 32-44348T

Brand Status

Aftermarket replacement, not OEM-branded

What's in the Box

• 2 x upper exhaust bellows

Not included unless separately stated: hose clamps, gaskets, risers, exhaust elbows, mounting hardware, or other exhaust-system components. Reuse of existing hardware should be based on its condition and the installation requirements of the specific application.

Installation Notes

1. Allow the engine and exhaust components to cool completely before beginning work.
2. Disconnect the battery and follow the boat and engine manufacturer's safety procedures.
3. Confirm that the removed component is the upper exhaust bellows and document the original clamp orientation.
4. Remove the existing clamps and bellows using suitable tools without damaging the riser or exhaust elbow.
5. Clean the mating surfaces and inspect the riser, elbow, clamps, and surrounding exhaust components for corrosion, damage, or distortion.
6. Compare the new bellows with the original part, including the 4-inch openings, length, shape, and connection profile.
7. Install the bellows in the same upper riser-to-elbow position and ensure that it is fully seated and not twisted.
8. Install suitable clamps for the application and tighten them according to the engine or component manufacturer's specifications. Clamps are not included with this product unless specifically stated.
9. Reconnect the battery, run the engine only in a safe and properly ventilated environment, and inspect for exhaust, water, or gas leakage.
10. Stop operation immediately if leakage, abnormal noise, looseness, or exhaust fumes are detected.

Maintenance and Troubleshooting

Inspect the upper exhaust bellows regularly, especially before the boating season and after operation in saltwater. Look for cracking, splitting, hardening, swelling, abrasion, clamp damage, or evidence of exhaust or water leakage. Replace the bellows if any of these conditions are present.

Safety and Important Information

• Verify the original component, connection size, position, and profile before purchase.
• Do not rely on engine horsepower or model family alone to confirm compatibility.
• Do not operate an engine with suspected exhaust leakage.
• Professional installation is recommended when access is restricted or when the exhaust system is corroded or damaged.

About Sea Sierra

• Application-Focused Marine Parts — Replacement components selected for common stern-drive and inboard marine service applications.
• Clear Product Information — Package contents and reference numbers are presented to support careful part comparison.
• Practical Replacement Value — Aftermarket alternatives for maintenance and repair projects.